Large Negative Linear Compressibility in InH(BDC)2 from Framework Hinging
- 26 October 2017
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 139 (44) , 15648-15651
Abstract
Materials with negative linear compressibility (NLC) counterintuitively expand along one specific direction coupled to the volume reduction when compressed uniformly. NLC with a large value is desired for compression and materials science. However, NLC is generally smaller than −20 TPa–1. High-pressure X-ray diffraction experiments reveal that the β-quartz-like InH(BDC)2 generates an extreme NLC (−62.4 TPa–1) by framework hinging. InH(BDC)2 is much safer and lower-cost than Au+/Ag+ and CN–-containing materials that dominated the fields of large NLC. This work reconfirms that a negative thermal expansion flexible framework could likely exhibit large NLC. Moreover, a large NLC could be anticipated to arise from β-quartz-like or related frameworks composed of rigid linear ligands and flexible framework angles.Keywords
Funding Information
- Ministry of Education of the People's Republic of China (T2016051)
- People's Government of Jilin Province (2013007)
- National Natural Science Foundation of China (11774120, 21673100, 21725304, 91227202)
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